<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        p {
color: red;
}
p {
color: #ff0000;
}
p {
color: rgb(112, 128, 114);
color: rgba(0, 128, 128, 0.5);
color: hsl(120, 100%, 30%);
color: hsla(120, 100%, 30%, 0.5);
}
p {
margin: 0;
padding: 0;
background: silver;
font-size: 15px;
height: 2em;
}
p {
margin: 0;
padding: 0;
background: silver;
font-size: 15px;
height: 55px;
}
p {
margin: 0;
padding: 0;
background: silver;
font-size: 200%;
width: 50%;
}
</style>
</head>
<body>
    
</body>
</html>